After a few seconds (just long enough for me to register it wasn't an airplane I was seeing), it briefly expanded in size to about twice the size from when I initially noticed, changing from the more yellow/slight orange color to a more orange/slight yellow color.

Fragmentation

Observation

Yes

Remarks

After the flash, it broke into two (main) pieces, with an extremely brief collection of smaller debris around it (which faded almost immediately). One of the two pieces seemed to accelerate, maintaining the original trajectory for about half-to-one-second before fading. The second seemed to go at a slightly different angle (more directly downward), but at a slower rate for slightly longer (about one full second) before fading.